Finding the Fourth Proportional to 300,917.98, 415,279.53 and 171,877.69

Step by Step Solution

1. Step 1: Write the proportion equation
   300,917.98 : 415,279.53 = 171,877.69 : x
2. Step 2: Convert to fraction form
   300,917.98/415,279.53 = 171,877.69/x
3. Step 3: Cross multiply
   300,917.98x = 415,279.53 × 171,877.69
4. Step 4: Simplify right side
   300,917.98x = 71,377,285,282.49
5. Step 5: Solve for x
   x = 71,377,285,282.49/300,917.98
6. Step 6: Final answer
   x = 237,198.47